Automatic identification of three-body scatter spike in the doppler radar reflectivity image

作者：Wang Ping; Du Xuefeng^*; Xu Kaoji

来源：Journal of Tianjin University, 2014, 47(8): 711-718.

DOI：10.11784/tdxbz201305037

• Automatic identification
• Chain codes
• code
• Doppler
• False alarm rate
• Identification rates
• Radar reflectivities
• Three body

The accurate identification of three-body scatter spike (TBSS) can reduce the false alarm rate of strong hail and improve the timeliness of strong hail forecast. This paper provides a detailed analysis of the formation of the threebody scatter spike and then defines it into two classes. Designing the standard template, normatively transforming the target area solve the problem of short, cuneiform-shaped TBSS identification; and then the chain code is used to calculate the main direction of the boundary for identifying the long and straight TBSS. Test shows that the method is not good at the identification of the short TBSS with broken region or the long TBSS whose end is connected with others. Identification rate of TBSS is 94.8% and false alarm rate is less than 1%.

• 出版日期2014
• 单位天津大学